Location History:
- Kuga-gun, JP (2011 - 2012)
- Tokyo, JP (2014)
- Yamaguchi, JP (2011 - 2015)
Company Filing History:
5 out of 188 
5 out of 331 
4 out of 20 Years Active: 2011-2015
Title: Innovative Contributions of Ippei Fujinaga in Lithium-Ion Battery Technology
Introduction
Ippei Fujinaga, a notable inventor based in Yamaguchi, Japan, has made significant strides in the realm of lithium-ion battery technology. With a total of 10 patents to his name, Fujinaga’s work revolves around enhancing the performance and efficiency of battery materials, particularly focusing on graphite components essential for battery electrodes.
Latest Patents
Fujinaga's latest patents include groundbreaking advancements in graphite materials specifically designed for lithium-ion secondary batteries. One of his notable disclosures details a graphite material with lattice distortion, which is pivotal for enhancing the performance of negative electrodes. This involves a meticulous manufacturing method that entails the pulverization and classification of a raw coke composition derived from heavy oil—a process utilizing delayed coking. Key parameters such as the H/C atomic ratio and micro-strength are strictly controlled to optimize the material's properties.
In addition, he has developed an innovative method for producing an amorphous carbon material intended for the negative electrode of lithium-ion secondary batteries. This method incorporates similar processing steps that ensure the crystallite size is finely tuned, enhancing the overall efficiency of the battery.
Career Highlights
Fujinaga has collaborated with major industry players, including Nippon Oil Corporation and JX Nippon Oil & Energy Corporation. His work has not only contributed to advancements in battery technology but also positioned him as a key figure in the ongoing development of sustainable energy solutions.
Collaborations
Throughout his career, Fujinaga has worked alongside esteemed colleagues such as Takashi Oyama and Tamotsu Tano. These collaborations have allowed him to refine his inventions and further contribute to the field of energy technologies.
Conclusion
Ippei Fujinaga’s innovations in graphite materials and lithium-ion battery technology signify a remarkable advancement in energy storage solutions. His extensive patent portfolio and collaborative efforts with established companies highlight the importance of continuous research and development in this crucial sector.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.